Did you add the triple sec? Juice of one lime, tbsp of simple syrup, 1/2 oz triple sec o other orange liquer (blue curacao is fun), 1.5 ox decent silver tequila.
Emphasis on the “decent silver tequila.” I don’t think Lunazul qualifies. About the minimum I’d drink in a decent cocktail would be Milagro or El Jimador.
Yep, shitty booze equals shitty cocktails. Once made a bunch of cuba libres with Coruba dark rum…<shudder> never again.